diff --git a/CHANGELOG.md b/CHANGELOG.md
index e0c7babb84..b5912a4c63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,7 +17,8 @@
 - `FlxPath`: added `immovable` bool (previously object were always immovable when following paths) ([#2480](https://github.com/HaxeFlixel/flixel/pull/2480))
 - `FlxPathDrawData`: added `myFlxPath.debugDrawData` to allow custom colors and draw properties ([#2480](https://github.com/HaxeFlixel/flixel/pull/2480))
 - `FlxAxes`: added `x` and `y` getters and `NONE` value ([#2480](https://github.com/HaxeFlixel/flixel/pull/2480))
-- `FlxTween`: added `ShakeTween` and `FlxTween.shake()` helper ([#2549](https://github.com/HaxeFlixel/flixel/pull/2549)) 
+- `FlxTween`: added `ShakeTween` and `FlxTween.shake()` helper ([#2549](https://github.com/HaxeFlixel/flixel/pull/2549))
+- `WatchFrontEnd`: added `FlxG.watch.addFunction` ([#2500](https://github.com/HaxeFlixel/flixel/pull/2500))
 
 #### Bugfixes:
 
diff --git a/flixel/system/debug/watch/Watch.hx b/flixel/system/debug/watch/Watch.hx
index 9a4bc3f06c..f6dc8ab132 100644
--- a/flixel/system/debug/watch/Watch.hx
+++ b/flixel/system/debug/watch/Watch.hx
@@ -62,6 +62,8 @@ class Watch extends Window
 				displayName.isNullOrEmpty();
 			case EXPRESSION(expression, _):
 				expression.isNullOrEmpty();
+			case FUNCTION(func):
+				func == null;
 		}
 	}
 
diff --git a/flixel/system/debug/watch/WatchEntry.hx b/flixel/system/debug/watch/WatchEntry.hx
index ec6690f8d0..f8178d6257 100644
--- a/flixel/system/debug/watch/WatchEntry.hx
+++ b/flixel/system/debug/watch/WatchEntry.hx
@@ -58,6 +58,7 @@ class WatchEntry extends Sprite implements IFlxDestroyable
 			case FIELD(_, _): 0xFFFFFF;
 			case QUICK(_): 0xA5F1ED;
 			case EXPRESSION(_, _): 0xC4FE83;
+			case FUNCTION(_): 0xF1A5A5;
 		}
 	}
 
@@ -96,6 +97,7 @@ class WatchEntry extends Sprite implements IFlxDestroyable
 			case EXPRESSION(expression, _):
 				setNameText(expression);
 			case QUICK(_):
+			case FUNCTION(_):
 		}
 	}
 
@@ -120,6 +122,8 @@ class WatchEntry extends Sprite implements IFlxDestroyable
 				#end
 			case QUICK(value):
 				value;
+			case FUNCTION(func):
+				func();
 		}
 	}
 
diff --git a/flixel/system/debug/watch/WatchEntryData.hx b/flixel/system/debug/watch/WatchEntryData.hx
index 90fc1d02fb..4a243433d5 100644
--- a/flixel/system/debug/watch/WatchEntryData.hx
+++ b/flixel/system/debug/watch/WatchEntryData.hx
@@ -20,4 +20,9 @@ enum WatchEntryData
 	 * Haxe expression evaluated with hscript.
 	 */
 	EXPRESSION(expression:String, parsedExpr:#if hscript Expr #else String #end);
+	
+	/**
+	 * A function that returns the value to display.
+	 */
+	FUNCTION(func:()->Dynamic);
 }
diff --git a/flixel/system/frontEnds/WatchFrontEnd.hx b/flixel/system/frontEnds/WatchFrontEnd.hx
index c9ecdab046..d190a27e1d 100644
--- a/flixel/system/frontEnds/WatchFrontEnd.hx
+++ b/flixel/system/frontEnds/WatchFrontEnd.hx
@@ -98,6 +98,20 @@ class WatchFrontEnd
 		FlxG.game.debugger.watch.remove(displayName, null);
 		#end
 	}
+	
+	public function addFunction(displayName:String, func:()->Dynamic):Void
+	{
+		#if FLX_DEBUG
+		FlxG.game.debugger.watch.add(displayName, FUNCTION(func));
+		#end
+	}
+	
+	public function removeFunction(displayName:String):Void
+	{
+		#if FLX_DEBUG
+		FlxG.game.debugger.watch.remove(displayName, null);
+		#end
+	}
 
 	/**
 	 * Add the mouse coords to the watch window. Useful for quickly